License Network Plots

Please review to the License Networks to understand which license code corresponds with which license type

Annual network plots

Each network features only the licenses available in that given year.

Edge density

Below is the time series of network edge density. The density of a graph is the ratio of the actual number of edges and the largest possible number of edges in the graph, assuming that no multi-edges are present. A network with higher density suggests more connections within the network. In the case of license holdings, a region with a denser network means that fishers have a more diversified permit portfolio and have flexibility to participate in multiple activities.

High modularity and low density have different subgroups of the target species that alternate over the time period, while high density implies species are being caught simultaneously (Nomura et. al, 2021)

Modularity

The data anomalies of 2016-2020 are skewing results